:root {
  --hxl-board-ink: #27231f;
  --hxl-board-paper: #fffdf6;
  --hxl-board-line: #ded2c0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}

.hxl-whiteboard-page {
  overflow: hidden;
  color: var(--hxl-board-ink);
  background:
    linear-gradient(90deg, rgba(222, 210, 192, 0.28) 1px, transparent 1px),
    linear-gradient(rgba(222, 210, 192, 0.28) 1px, transparent 1px),
    var(--hxl-board-paper);
  background-size: 28px 28px;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.hxl-whiteboard-topbar {
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 16px;
  border-bottom: 2px solid var(--hxl-board-ink);
  background: rgba(255, 253, 246, 0.88);
}

.hxl-whiteboard-home {
  color: var(--hxl-board-ink);
  font: 700 24px "Caveat", cursive;
  text-decoration: none;
  white-space: nowrap;
}

.hxl-whiteboard-status {
  min-width: 0;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
  flex: 1;
}

.hxl-whiteboard-current-name {
  max-width: min(36vw, 460px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font: 700 22px "Caveat", cursive;
}


.hxl-whiteboard-actions {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hxl-whiteboard-actions button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0;
  border: 2px solid var(--hxl-board-ink);
  border-radius: 8px;
  color: var(--hxl-board-ink);
  background: rgba(255, 253, 246, 0.7);
  transition: background 0.12s, transform 0.1s;
}

.hxl-whiteboard-icon-btn {
  width: 34px;
}

.hxl-whiteboard-icon-btn:hover,
.hxl-whiteboard-menu-btn:hover {
  background: #ffeaa3;
}

.hxl-whiteboard-icon-btn:active,
.hxl-whiteboard-menu-btn:active {
  transform: scale(0.92);
}

.hxl-whiteboard-menu-btn {
  width: 34px;
}

.hxl-whiteboard-divider {
  width: 1px;
  height: 22px;
  background: var(--hxl-board-line);
  border-radius: 1px;
  flex-shrink: 0;
}

/* ── Menu panel items ── */
.hxl-whiteboard-menu-panel {
  display: grid;
  gap: 4px;
}

.hxl-whiteboard-menu-panel[hidden] {
  display: none;
}

.hxl-whiteboard-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 36px;
  padding: 6px 10px;
  border: 0;
  border-radius: 7px;
  color: var(--hxl-board-ink);
  background: transparent;
  font: 700 16px "Caveat", cursive;
  text-align: left;
  transition: background 0.12s;
}

.hxl-whiteboard-menu-item:hover {
  background: #ffeaa3;
}

.hxl-whiteboard-menu-item.is-danger {
  color: #b4233f;
}

.hxl-whiteboard-menu-item.is-danger:hover {
  background: #ffe1e7;
}

.hxl-whiteboard-menu-divider {
  margin: 4px 0;
  border: none;
  border-top: 1px solid var(--hxl-board-line);
}

.hxl-whiteboard-menu-wrap {
  position: relative;
}

.hxl-whiteboard-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 248px;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  z-index: 20;
  display: grid;
  gap: 6px;
  padding: 10px;
  border: 2px solid var(--hxl-board-ink);
  border-radius: 8px;
  background: rgba(255, 253, 246, 0.98);
  box-shadow: 4px 4px 0 rgba(39, 35, 31, 0.18);
}

.hxl-whiteboard-mode-label {
  color: #6f6759;
  font-size: 12px;
}

.hxl-whiteboard-shell {
  height: calc(100vh - 48px);
  min-height: 0;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
}

.hxl-whiteboard-sidebar {
  min-height: 0;
  padding: 14px 12px;
  border-right: 2px solid var(--hxl-board-ink);
  background: rgba(255, 253, 246, 0.82);
  overflow: auto;
}

.hxl-whiteboard-sidebar-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.hxl-whiteboard-sidebar-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}

.hxl-whiteboard-sidebar-title {
  margin: 0;
  font: 700 28px "Caveat", cursive;
}

.hxl-whiteboard-mini-btn {
  min-width: 34px;
  min-height: 28px;
  padding: 2px 8px;
  border: 2px solid var(--hxl-board-ink);
  border-radius: 8px;
  color: var(--hxl-board-ink);
  background: #fff6d8;
  font: 700 14px "Caveat", cursive;
  white-space: nowrap;
}

.hxl-whiteboard-mini-btn:hover {
  background: #ffeaa3;
}

/* ── Sort row ── */
.hxl-whiteboard-sort-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
}

.hxl-whiteboard-sort-label {
  color: #5f574b;
  font: 700 15px "Caveat", cursive;
  flex-shrink: 0;
}

.hxl-whiteboard-sort-btn {
  padding: 2px 10px;
  border: 2px solid var(--hxl-board-line);
  border-radius: 8px;
  color: #5f574b;
  background: transparent;
  font: 700 15px "Caveat", cursive;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
}

.hxl-whiteboard-sort-btn.is-active {
  border-color: var(--hxl-board-ink);
  color: var(--hxl-board-ink);
  background: #fff6d8;
}

.hxl-whiteboard-sort-btn:hover {
  background: #ffeaa3;
}

/* ── Tree ── */
.hxl-whiteboard-tree {
  display: grid;
  gap: 4px;
}

.hxl-whiteboard-tree-folder {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) 26px 26px;
  gap: 4px;
  align-items: center;
  padding: 5px 6px;
  border: 2px solid var(--hxl-board-ink);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.66);
  font: 700 17px "Caveat", cursive;
}

.hxl-whiteboard-tree-folder.is-active {
  background: #ffeaa3;
}

.hxl-whiteboard-tree-toggle {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--hxl-board-ink);
  font: 700 14px system-ui, sans-serif;
  line-height: 1;
  text-align: center;
}

.hxl-whiteboard-tree-toggle:hover {
  background: transparent;
  opacity: 0.6;
}

.hxl-whiteboard-tree-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hxl-whiteboard-tree-children {
  padding-left: 18px;
  display: grid;
  gap: 4px;
  margin-bottom: 4px;
}

.hxl-whiteboard-tree-children.is-collapsed {
  display: none;
}

.hxl-whiteboard-tree-doc {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 26px 26px;
  gap: 4px;
  align-items: center;
  padding: 5px 8px;
  border: 2px solid var(--hxl-board-line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.55);
  font: 700 17px "Caveat", cursive;
}

.hxl-whiteboard-tree-doc.is-active {
  background: #ffeaa3;
  border-color: var(--hxl-board-ink);
}

.hxl-whiteboard-open {
  min-width: 0;
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  text-align: left;
  font: inherit;
}

.hxl-whiteboard-open:hover {
  background: transparent;
}

.hxl-whiteboard-list-main {
  min-width: 0;
}

.hxl-whiteboard-rename,
.hxl-whiteboard-delete {
  width: 26px;
  height: 26px;
  padding: 0;
  border-radius: 6px;
  font: 700 14px system-ui, sans-serif;
}

.hxl-whiteboard-rename {
  border: 2px solid #26706f;
  color: #26706f;
  background: rgba(255, 255, 255, 0.7);
}

.hxl-whiteboard-delete {
  border: 2px solid #b4233f;
  color: #b4233f;
  background: rgba(255, 255, 255, 0.7);
}

.hxl-whiteboard-rename:hover {
  background: #ddfff8;
}

.hxl-whiteboard-delete:hover {
  background: #ffe1e7;
}

.hxl-whiteboard-doc-title {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hxl-whiteboard-doc-meta {
  display: block;
  margin-top: 1px;
  color: #756b5c;
  font: 12px system-ui, sans-serif;
}

.hxl-whiteboard-doc-empty,
.hxl-whiteboard-folder-empty {
  color: #756b5c;
  font: 700 18px "Caveat", cursive;
  padding: 2px 4px;
}

/* ── Auto-save setting in menu ── */
.hxl-whiteboard-menu-setting {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 2px 4px;
}

.hxl-whiteboard-menu-setting-label {
  font: 700 16px "Caveat", cursive;
  color: var(--hxl-board-ink);
  white-space: nowrap;
}

.hxl-whiteboard-autosave-select {
  flex: 1;
  min-width: 0;
  padding: 4px 6px;
  border: 2px solid var(--hxl-board-ink);
  border-radius: 7px;
  background: #fff;
  font: 700 14px "Caveat", cursive;
  color: var(--hxl-board-ink);
  cursor: default;
}

.hxl-whiteboard-app {
  width: 100%;
  height: 100%;
}

.hxl-whiteboard-loading,
.hxl-whiteboard-error {
  height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
  text-align: center;
  font: 700 28px "Caveat", cursive;
}

.hxl-whiteboard-error {
  color: #b4233f;
}

/* ── Custom dialog ── */
.hxl-dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(39, 35, 31, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100000;
  padding: 24px;
  backdrop-filter: blur(2px);
}

.hxl-dialog {
  width: 100%;
  max-width: 380px;
  padding: 24px 28px 20px;
  border: 2.5px solid var(--hxl-board-ink);
  border-radius: 14px;
  background: var(--hxl-board-paper);
  box-shadow: 6px 6px 0 rgba(39, 35, 31, 0.18);
  animation: hxl-dialog-in 0.12s ease;
}

@keyframes hxl-dialog-in {
  from { opacity: 0; transform: translateY(-8px) scale(0.97); }
  to   { opacity: 1; transform: none; }
}

.hxl-dialog-title {
  margin: 0 0 10px;
  font: 700 26px "Caveat", cursive;
  color: var(--hxl-board-ink);
}

.hxl-dialog-message {
  margin: 0 0 14px;
  font: 400 14px system-ui, sans-serif;
  color: #5f574b;
  line-height: 1.5;
}

.hxl-dialog-input {
  display: block;
  width: 100%;
  margin-bottom: 18px;
  padding: 8px 10px;
  border: 2px solid var(--hxl-board-ink);
  border-radius: 8px;
  background: #fff;
  font: 400 15px system-ui, sans-serif;
  color: var(--hxl-board-ink);
  outline: none;
  box-sizing: border-box;
}

.hxl-dialog-input:focus {
  border-color: #4a7fbd;
  box-shadow: 0 0 0 3px rgba(74, 127, 189, 0.18);
}

.hxl-dialog-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.hxl-dialog-btn {
  min-height: 34px;
  padding: 5px 18px;
  border: 2px solid var(--hxl-board-ink);
  border-radius: 8px;
  font: 700 17px "Caveat", cursive;
  cursor: default;
  transition: background 0.1s, transform 0.1s;
}

.hxl-dialog-btn:active {
  transform: scale(0.94);
}

.hxl-dialog-cancel {
  color: #5f574b;
  background: rgba(255, 253, 246, 0.7);
}

.hxl-dialog-cancel:hover {
  background: #f0ece0;
}

.hxl-dialog-confirm {
  color: var(--hxl-board-ink);
  background: #fff6d8;
}

.hxl-dialog-confirm:hover {
  background: #ffeaa3;
}

.hxl-dialog-confirm.is-danger {
  border-color: #b4233f;
  color: #b4233f;
  background: #fff0f2;
}

.hxl-dialog-confirm.is-danger:hover {
  background: #ffe1e7;
}

/* ── Menu section heading ── */
.hxl-whiteboard-menu-section {
  margin: 0;
  padding: 0 4px;
  color: #6f6759;
  font: 700 13px system-ui, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ── Collapsible section toggle ── */
.hxl-whiteboard-menu-collapse-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 4px 6px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: #6f6759;
  font: 700 13px system-ui, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: left;
  transition: background 0.12s, color 0.12s;
}

.hxl-whiteboard-menu-collapse-btn:hover {
  background: #f0ece0;
  color: var(--hxl-board-ink);
}

.hxl-menu-collapse-arrow {
  font-size: 11px;
  transition: transform 0.15s;
}

#hxl-export-settings-body {
  display: grid;
  gap: 4px;
  padding-top: 2px;
}

#hxl-export-settings-body[hidden] {
  display: none;
}

/* ── Toast notification ── */
.hxl-toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  padding: 7px 20px;
  border: 2px solid var(--hxl-board-ink);
  border-radius: 999px;
  background: var(--hxl-board-paper);
  box-shadow: 3px 3px 0 rgba(39, 35, 31, 0.14);
  font: 700 17px "Caveat", cursive;
  color: var(--hxl-board-ink);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 200000;
  pointer-events: none;
}

.hxl-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Right-click pan cursor hint ── */
.hxl-whiteboard-app.is-panning,
.hxl-whiteboard-app.is-panning * {
  cursor: grabbing !important;
}

@media (max-width: 700px) {
  .hxl-whiteboard-topbar {
    height: 88px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 8px 12px;
  }

  .hxl-whiteboard-shell {
    height: calc(100vh - 88px);
    grid-template-columns: 1fr;
    grid-template-rows: 180px minmax(0, 1fr);
  }

  .hxl-whiteboard-status {
    width: 100%;
    justify-content: space-between;
  }

  .hxl-whiteboard-sidebar {
    border-right: 0;
    border-bottom: 2px solid var(--hxl-board-ink);
  }
}